Open your firewall go to Defense + settings, where you see disable the Defense + permanently (requires a system restart) put a tic in that box then restart your computer… :-TU
I know one guy he uses only Comodo Firewall (with D+ switched off - it doesn’t let to work some his progs) and AV (Avast free) and he has no problems yet for about a year. His comp is all day long connected to the Internet.